Advertising-sign.



PATENTED F1111. 14,1905. O. R. GROEP, Sn., c. R. GROEP, Jn. & L; C.GROEP..

ADVERTISING SIGN.

APPLIOATION FILED A1 1z.11, 1904.

3 SHEETS-SHEET l,

FAL, 9

PATENTED PEB. 14, 1905.'.

C. R. GRN', Si, 0.11.. GROFF, JB. & L. G. GRGFF.

ADVERTISING SIGN.

APYLIUA',I 10H FILED APB. 11, 1904.

3 SHEETS-'SHEET 2.

W1' in e 5s es:

` 'r m fr 44.

.PATENTED FEB. v14, 1905. n., c.' n; GROEP, JB. L L. cpGRoPP.ADVBR'TIsNG SIGN.

APPLICATION FILED APB. 11I 1904.

No. 72,49s.

c. R. GROEP, s

a sums-Smm' af IIIIIIIIIIIIIIIIIIIIIIIIIIIII '.[II

UNITED STATES Patented. February 14, 190.

PATENT OFFICE.

CHARLES R. GROFF. SR.. CHARLES R. GROFF, J AND LESLIE GROFF;

- F VHITEBEAR, MINNESOTA.

ADVERTISING-SIGN.

SPECIFICATION forming part of Letters Patent No. 782,498, dated February14, 1905. Application filed April 11,1904. Serial No. 202,481.

To all whom, if may concern:

Be it known that \vc,GHARLES R.G ROFF, Sr. Cuantas R. GROW, Jr. andLESLIE G non?. citizens of the United States of America. and residentsof Whitebear, in the county of Ranisey and State of Minnesota, haveinvented certain new and useful Improvements in Advertising-Signs, ofwhich the following is a specification. Our invention relates toimprovementsin ad .fertising-signs, and has for its object eil'ect- 'emeans for illuminated advertising which aresimple in construction andoperation and brilliant intellect. g To these ends our inventionconsists of a suitable inclosure having an illuminating-sign and meansfor changing the colors of said sign. .ln the accompanying drawings,forming part of this specification, Figure 1 is a sectional view inelevation of our invention. Fig. '2 is a view looking at the back of theinclosnrc when the door is open. Fig. 3 is a front view. Fig. 4 is aview of the multicolor screen, showing the color-pieces removed. Fig. 5isa sectional view of said screen. Fig. 6 is a sectional view of analternate construction, and Fig. 7 is a sectional view of Fig. 6

on the line X X.

reflector b v means of; a socket 13. Arevolu` ble multicolor-screen' Gispositioned between the open end of the main reflector and the outerF endof the auxiliary reflector, where it In the drawings, let A represent asuitable inclosure havingl an illuminating sign-plate 2 in one end. Thissign-plate' has an .opaque ground `and translucentletters 3. Located insaid inclosure is a main reflector B, which is made of tin or othersuitable material, having walls 4, which converge toward an open en 5.The larger end of this reflector is shaped to fit within the sides ofsaid Ainclosure and rest against the sign-plate. The reflector is formedwith flat segmental surfaces 6, which are adapted to sharply rellect thelight against the sign-plate. Back of the reflector is a door 8, whichis hcld'closed by means of an crdinary catch. (Not shown.) An'auxiliaryreector 11 is fastened Ato the door, and an electric lamp 12 is mountedwithin said auxiliary is revolved by means of the clockwork mech- 56anism D, (of ordinary construction and supported by brackets 7.)carrying the drive- -shai't 15, on'wlnch said screen 1s mounted.

This color-screen consists of a circular frame Y 14 andradiatlng arms20, between which col- 55 ored segments F, of glass, mica, or any othet`transparent or translucent material, may be` mounted in .the slotsll. Asshown, the segmental openings between some of the arms are leftopen orpartly open, so as to produce diflerent color efl'ects upon the sign. Anelectric switchl is also carried by the shaft 15 and consists of acircular insulating-block 17, supporting commntator-scgments 18, whichare electrically connected with said shaft. A

brush 19,' fastened to the support 10, sweeps the segments as the switch16 rfcvolvcs. 'The main reflector is. provided with a horizontalpartition Q2 between the words or letters of the sign` and the segmentsin the frame 14 are 70.v

formed with sections 21 of different colors. Partor all of the sectionsof any segmentmayl be omitted, so that the color of the light will bevaried on thcdiilcrent sides of the partition in the main reflector,thus producing contrast and greater diversity of colors between thewords of the sign.

The lamp and switch areA shown connected in Fig. 1 tliag1:tii1niaticallywith the electric circuit 23, which leads from the socket tothe' 80brush, thence through the segments of the switch, clockwork mechanism,and the electric generator E and back to the socket and' lamp. Thesegments of the switch and multicolor-screen are positioned so that thelamp -is switched on or off successively as the screen revolves, thelight being reflected through the 'opcnin g .against the sign when thecolor-seg- Vmcnts are fully interposed between the reflector and theopening and turned oil' when 9o the bars 2O are in front of said openingand the segments moved out of effective position.

I In operation the'color-screen is revolved at a low rate of speed.

It is obviocs that the partition 22 need not 95 be used unless desiredor that a number of partitions may be used and' the arrangement of thecolor-screen changed, also that a gas or other side, means for changingthe coiors of light thus cast, and means colors of light to sharplydefine on said sign-plate.

, 18. A device of the class set forth, consisting of an inclosure A, anilluminated signplate 2 in one end tiiei'eof, a main reector B theirposition in said inclosure having walls 4 which converge toward an openend 5, a door 8 in said inclosure back of seid reiectoi', an auxiliaryreiiector 11 'asteiied to said door, an electric lamp 12 mounted withinsaid auxiliary refcctor, a revoluble mLiiticolor-screen C between theopen end of said main refiector and the outer end of said auxiliaryreecrior, clockt'or separating said work mechanism Dattached to saidscreen to revolve the same, en electric switch 16 con.- nected to saidscreen, :in electric circuit connected with said lamp and switch. and aion, in said mein i'eliectoi',

gitudinal partition 22 for the purposes specitied.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

I CHARLES RMTEOFF, SR. CHARLES R.` (ij-kijiji?, J 1:. LESLIE C. (k-OFF.Witnesses: Y,

E. M. BoEsEL, F. S. BiuDiiURY.

